Abstract
We have studied on the qualities of 250 kinds of stable manures, collected from 84 towns and villages in Yamaguchi prefecture, and the results may be summarized as follows : [table] There is no correlation between the kinds of domestic animals and the constituents of the stable manures. According to the results of pot experiment with rice plant and naked barley, we ascertained that the manureing effect of nitrogen contained in the stable manures having a small C : N ratio is superior to that of nitrogen contained in the stable manures having a large one, and this inclination is more remarkable in the case of naked barley than rice plant.
